297894631 has 2 divisors, whose sum is σ = 297894632. Its totient is φ = 297894630.

The previous prime is 297894613. The next prime is 297894637. The reversal of 297894631 is 136498792.

Together with previous prime (297894613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 297894631 - 2¹⁹ = 297370343 is a prime.

It is a super-2 number, since 2×297894631² = 177482422357252322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (297894637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148947315 + 148947316.

It is an arithmetic number, because the mean of its divisors is an integer number (148947316).

Almost surely, 2^297894631 is an apocalyptic number.

297894631 is a deficient number, since it is larger than the sum of its proper divisors (1).

297894631 is an equidigital number, since it uses as much as digits as its factorization.

297894631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 49.

The square root of 297894631 is about 17259.6243006619. The cubic root of 297894631 is about 667.8632686251.

The spelling of 297894631 in words is "two hundred ninety-seven million, eight hundred ninety-four thousand, six hundred thirty-one".